hum

As nouns the difference between slam and hum

is that slam is (countable) a sudden impact or blow or slam can be (obsolete) a type of card game, also called ruff and honours while hum is twilight, dusk.

As a verb slam

is (ergative) to shut with sudden force so as to produce a shock and noise or slam can be (card games) to defeat by winning all the tricks of a deal or a hand.

In intransitive terms the difference between hum and moan

is that hum is to produce low sounds which blend continuously while moan is to make a moan or similar sound.

In transitive terms the difference between hum and moan

is that hum is to express by humming while moan is to say in a moan, or with a moaning voice.

As an interjection hum

is hmm; an inarticulate sound uttered in a pause of speech implying doubt and deliberation.

As a pronoun wir

is we.

As a noun hum is

twilight, dusk.

In intransitive terms the difference between roar and hum

is that roar is to make a loud, deep cry, especially from pain, anger, or other strong emotion while hum is to produce low sounds which blend continuously.

In transitive terms the difference between roar and hum

is that roar is to cry aloud; to proclaim loudly while hum is to express by humming.

As an interjection hum is

hmm; an inarticulate sound uttered in a pause of speech implying doubt and deliberation.

In intransitive terms the difference between hum and boom

is that hum is to produce low sounds which blend continuously while boom is to be prosperous.

In transitive terms the difference between hum and boom

is that hum is to express by humming while boom is to make something boom.

In intransitive terms the difference between hum and whisper

is that hum is to produce low sounds which blend continuously while whisper is to speak with suspicion or timorous caution; to converse in whispers, as in secret plotting.

In transitive terms the difference between hum and whisper

is that hum is to express by humming while whisper is to mention privately and confidentially, or in a whisper.

As an interjection hum

is hmm; an inarticulate sound uttered in a pause of speech implying doubt and deliberation.

As nouns the difference between hum and howl

is that hum is twilight, dusk while howl is the protracted, mournful cry of a dog or a wolf, or other like sound.

As a verb howl is

to utter a loud, protracted, mournful sound or cry, as dogs and wolves often do.

Hom is often a misspelling of hum.

Hom has no English definition.

As a noun hum

is a hummed tune, i.e. created orally with lips closed.

As a verb hum

is to make a sound from the vocal chords without pronouncing any real words, with one's lips closed.

As an interjection hum

is hmm; an inarticulate sound uttered in a pause of speech implying doubt and deliberation.

Purr is a synonym of hum.

In intransitive terms the difference between hum and purr

is that hum is to produce low sounds which blend continuously while purr is to make a vibrating throaty sound, as from pleasure.

In transitive terms the difference between hum and purr

is that hum is to express by humming while purr is to say (something) in a throaty, seductive manner.

As an interjection hum

is hmm; an inarticulate sound uttered in a pause of speech implying doubt and deliberation.